Activity管理类

package com.yunpai.tms.application;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;


import com.yunpai.tms.R;
import com.yunpai.tms.activity.LoginActivity;
import com.yunpai.tms.activity.MainActivity;

import java.util.Stack;

public class AppStackManager {
    // Activity栈
    private static Stack<Activity> activityStack;
    // 单例模式
    private static AppStackManager instance;

    /**
     * 单一实例
     */
    public static AppStackManager getInstance() {
        if (instance == null) {
            instance = new AppStackManager();
        }
        return instance;
    }

    /**
     * 添加Activity到堆栈
     */
    public void addActivity(Activity activity) {
        if (activityStack == null) {
            activityStack = new Stack<Activity>();
        }
        if (!activityStack.contains(activity))
        activityStack.add(activity);

    }

    /**
     * 获取当前Activity（堆栈中最后一个压入的）
     */
    public Activity currentActivity() {
        Activity activity = activityStack.lastElement();
        return activity;
    }

    /**
     * 结束当前Activity（堆栈中最后一个压入的）
     */
    public void finishActivity() {
        Activity activity = activityStack.lastElement();
        finishActivity(activity);
    }

    /**
     * 结束指定的Activity
     */
    public void finishActivity(Activity activity) {
        if (activity != null) {

            activityStack.remove(activity);
            activity.finish();
            activity.overridePendingTransition(R.anim.push_right_out, R.anim.push_right_out);
        }
    }

    /**
     * 结束指定类名的Activity
     */
    public void finishActivity(Class<?> cls) {
        for (Activity activity : activityStack) {
            if (activity.getClass().equals(cls)) {
                finishActivity(activity);
            }
        }
    }

    /**
     * 弹出栈顶
     */
    public void finishAfterActivity(Class<?> cls) {
        for (int i = activityStack.size() - 1; i > 0; i--) {
            if (null != activityStack.get(i)) {
                if (activityStack.get(i).getClass().equals(cls))
                    break;
                activityStack.get(i).finish();
            }
        }

    }

    /**
     * 结束所有Activity
     */
    public void finishAllActivity() {
        for (int i = 0; i < activityStack.size(); i++) {
            if (null != activityStack.get(i)) {
                activityStack.get(i).finish();
            }
        }
        activityStack.clear();
       // System.exit(0);
    }

    /**
     * 重新登录Activity
     */
    public void LoginActivity() {
        for (int i = 0; i < activityStack.size(); i++) {
            if (null != activityStack.get(i) && !activityStack.get(i).getClass().getName().equals(LoginActivity.class.getName())) {
                activityStack.get(i).finish();
            }
        }
    }

    /**
     * 到首页
     */
    public void goToMainActivity() {
        for (int i = 0; i < activityStack.size(); i++) {
            if (null != activityStack.get(i) && !activityStack.get(i).getClass().getName().equals(MainActivity.class.getName())) {
                activityStack.get(i).finish();
            }
        }

    }

    /**
     * 退出应用程序
     */
    public void AppExit(Context context) {
        try {
            finishAllActivity();
            ActivityManager activityMgr = (ActivityManager) context
                    .getSystemService(Context.ACTIVITY_SERVICE);
            activityMgr.killBackgroundProcesses(context.getPackageName());
            System.exit(0);
        } catch (Exception e) {
        }
    }
}